CGAL users discussion list

[Matthijs Sypkens Smit <>]

On Wednesday 10 October 2007 16:52, Andreas Fabri wrote:

> Hi Bernhard
>
> Define
>
> operator<(const PFacet_handle& f1, const PFacet_handle& f2)
> {
>    return &*f1 < &*f2;
> }
>
> This should work as std::set has less<T> as default comparator
> which just calls operator<

For those that actually search mailing list archives, I would like to add:

If you do not import the complete CGAL namespace, then you need to place 
this operator in the CGAL namespace, thus:

namespace CGAL
{

  bool operator<( const PVertex_handle &h1, const PVertex_handle &h2)
  {
     return &*h1 < &*h2;
  }

}


It took me quite a bit of searching and experimenting, before I found this 
solution. Apparently, types defined in a certain namespace, need to have 
their operator in the same namespace.


-- 
Matthijs Sypkens Smit